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Japanese ‘clean coal’ demonstration project takes a step further

By Tetsuo Satoh |

Construction has begun on the third step of a project to demonstrate the world’s first integrated coal-gasification fuel-cell (IGFC) combined cycle power plant with CO2 capture. The five-year, $73.3-million project is a collaboration of the New Energy and Industrial Technology Development Organization (NEDO; Kawasaki City; www.nedo.go.jp) and Osaki CoolGen Corp. (Hiroshima Prefecture, both Japan; www.osaki-coolgen.jp). IGFC technology has the potential to reach a 55% thermal efficiency (higher heating value; HHV). The IGFC demonstration project is composed of three steps (diagram): (1) the demonstration of oxygen-blown integrated coal-gasification combined-cycle (O2-blown IGCC), which was completed in March 2019; (2) the demonstration of O2 -blown IGCC with CO2 separation and capture, which started in December 2019; and (3) the demonstration of IGFC with CO2 separation and capture. For the first step, a 170,000 kW-class demonstration test facility was constructed within the grounds of the Osaki Power Station of The Chugoku Electric Power Co. During the demonstration tests, coal particles were used to operate a 1,300°C-class gas turbine, while using the heat generated to operate a steam turbine for combined-cycle power generation.…
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